
/*
Lightbox v2.51 
by Lokesh Dhakar - http://www.lokeshdhakar.com
(fixed for jQuery 1.9.1 by Driver86 - http://www.cybernova.net/)

For more information, visit:
http://lokeshdhakar.com/projects/lightbox2/

Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
- free for use in both personal and commercial projects
- attribution requires leaving author name, author link, and the license info intact
	
Thanks
- Scott Upton(uptonic.com), Peter-Paul Koch(quirksmode.com), and Thomas Fuchs(mir.aculo.us) for ideas, libs, and snippets.
- Artemy Tregubenko (arty.name) for cleanup and help in updating to latest proto-aculous in v2.05.


Table of Contents
=================
LightboxOptions

Lightbox
- constructor
- init
- enable
- build
- start
- changeImage
- sizeContainer
- showImage
- updateNav
- updateDetails
- preloadNeigbhoringImages
- enableKeyboardNav
- disableKeyboardNav
- keyboardAction
- end

options = new LightboxOptions
lightbox = new Lightbox options
*/

(function () {
    var $, Lightbox, LightboxOptions;

    $ = jQuery;

    LightboxOptions = (function () {

        function LightboxOptions() {
            this.fileLoadingImage = '/images/loading.gif';
            this.fileCloseImage = '/images/close.png';
            this.resizeDuration = 700;
            this.fadeDuration = 500;
            this.labelImage = "Imagem";
            this.labelOf = "de";
        }

        return LightboxOptions;

    })();

    Lightbox = (function () {

        function Lightbox(options) {
            this.options = options;
            this.album = [];
            this.currentImageIndex = void 0;
            this.init();
        }

        Lightbox.prototype.init = function () {
            this.enable();
            return this.build();
        };

        Lightbox.prototype.enable = function () {
            var _this = this;
            return $('body').on('click', 'a[rel^=lightbox], area[rel^=lightbox]', function (e) {
                _this.start($(e.currentTarget));
                return false;
            });
        };

        Lightbox.prototype.build = function () {
            var $lightbox,
      _this = this;
            $('body').append($('<div/>').attr('id', 'lightboxOverlay'));
            (
		$('<div/>').attr('id', 'lightbox').
		append(
			$('<div/>').addClass('lb-outerContainer').
			append(
				$('<div/>').addClass('lb-container').
				append(
					$('<img/>').addClass('lb-image'),
					$('<div/>').addClass('lb-nav').
					append(
						$('<a/>').addClass('lb-prev'),
						$('<a/>').addClass('lb-next')
					),
					$('<div/>').addClass('lb-loader').
					append(
						$('<a/>').addClass('lb-cancel').
						append(
							$('<img/>').attr('src', this.options.fileLoadingImage)
						)
					)
				)
			),
			$('<div/>').addClass('lb-dataContainer').
			append(
				$('<div/>').addClass('lb-data').
				append(
					$('<div/>').addClass('lb-details').
					append(
						$('<span/>').addClass('lb-caption'),
						$('<span/>').addClass('lb-number')
					),
					$('<div/>').addClass('lb-closeContainer').
					append(
						$('<a/>').addClass('lb-close').
						append(
							$('<img/>').attr('src', this.options.fileCloseImage)
						)
					)
				)
			)
		)
	).appendTo($('body'));
            $('#lightboxOverlay').hide().on('click', function (e) {
                _this.end();
                return false;
            });
            $lightbox = $('#lightbox');
            $lightbox.hide().on('click', function (e) {
                if ($(e.target).attr('id') === 'lightbox') _this.end();
                return false;
            });
            $lightbox.find('.lb-outerContainer').on('click', function (e) {
                if ($(e.target).attr('id') === 'lightbox') _this.end();
                return false;
            });
            $lightbox.find('.lb-prev').on('click', function (e) {
                _this.changeImage(_this.currentImageIndex - 1);
                return false;
            });
            $lightbox.find('.lb-next').on('click', function (e) {
                _this.changeImage(_this.currentImageIndex + 1);
                return false;
            });
            $lightbox.find('.lb-loader, .lb-close').on('click', function (e) {
                _this.end();
                return false;
            });
        };

        Lightbox.prototype.start = function ($link) {
            var $lightbox, $window, a, i, imageNumber, left, top, _len, _ref;
            $(window).on("resize", this.sizeOverlay);
            $('select, object, embed').css({
                visibility: "hidden"
            });
            $('#lightboxOverlay').width($(document).width()).height($(document).height()).fadeIn(this.options.fadeDuration);
            this.album = [];
            imageNumber = 0;
            if ($link.attr('rel') === 'lightbox') {
                this.album.push({
                    link: $link.attr('href'),
                    title: $link.attr('title')
                });
            } else {
                _ref = $($link.prop("tagName") + '[rel="' + $link.attr('rel') + '"]');
                for (i = 0, _len = _ref.length; i < _len; i++) {
                    a = _ref[i];
                    this.album.push({
                        link: $(a).attr('href'),
                        title: $(a).attr('title')
                    });
                    if ($(a).attr('href') === $link.attr('href')) imageNumber = i;
                }
            }
            $window = $(window);
            top = $window.scrollTop() + $window.height() / 10;
            left = $window.scrollLeft();
            $lightbox = $('#lightbox');
            $lightbox.css({
                top: top + 'px',
                left: left + 'px'
            }).fadeIn(this.options.fadeDuration);
            this.changeImage(imageNumber);
        };

        Lightbox.prototype.changeImage = function (imageNumber) {
            var $image, $lightbox, preloader,
        _this = this;
            this.disableKeyboardNav();
            $lightbox = $('#lightbox');
            $image = $lightbox.find('.lb-image');
            this.sizeOverlay();
            $('#lightboxOverlay').fadeIn(this.options.fadeDuration);
            $('.loader').fadeIn('slow');
            $lightbox.find('.lb-image, .lb-nav, .lb-prev, .lb-next, .lb-dataContainer, .lb-numbers, .lb-caption').hide();
            $lightbox.find('.lb-outerContainer').addClass('animating');
            preloader = new Image;
            preloader.onload = function () {
                $image.attr('src', _this.album[imageNumber].link);
                $image.width = preloader.width;
                $image.height = preloader.height;
                return _this.sizeContainer(preloader.width, preloader.height);
            };
            preloader.src = this.album[imageNumber].link;
            this.currentImageIndex = imageNumber;
        };

        Lightbox.prototype.sizeOverlay = function () {
            return $('#lightboxOverlay').width($(document).width()).height($(document).height());
        };

        Lightbox.prototype.sizeContainer = function (imageWidth, imageHeight) {
            var $container, $lightbox, $outerContainer, containerBottomPadding, containerLeftPadding, containerRightPadding, containerTopPadding, newHeight, newWidth, oldHeight, oldWidth,
        _this = this;
            $lightbox = $('#lightbox');
            $outerContainer = $lightbox.find('.lb-outerContainer');
            oldWidth = $outerContainer.outerWidth();
            oldHeight = $outerContainer.outerHeight();
            $container = $lightbox.find('.lb-container');
            containerTopPadding = parseInt($container.css('padding-top'), 10);
            containerRightPadding = parseInt($container.css('padding-right'), 10);
            containerBottomPadding = parseInt($container.css('padding-bottom'), 10);
            containerLeftPadding = parseInt($container.css('padding-left'), 10);
            newWidth = imageWidth + containerLeftPadding + containerRightPadding;
            newHeight = imageHeight + containerTopPadding + containerBottomPadding;
            if (newWidth !== oldWidth && newHeight !== oldHeight) {
                $outerContainer.animate({
                    width: newWidth,
                    height: newHeight
                }, this.options.resizeDuration, 'swing');
            } else if (newWidth !== oldWidth) {
                $outerContainer.animate({
                    width: newWidth
                }, this.options.resizeDuration, 'swing');
            } else if (newHeight !== oldHeight) {
                $outerContainer.animate({
                    height: newHeight
                }, this.options.resizeDuration, 'swing');
            }
            setTimeout(function () {
                $lightbox.find('.lb-dataContainer').width(newWidth);
                $lightbox.find('.lb-prevLink').height(newHeight);
                $lightbox.find('.lb-nextLink').height(newHeight);
                _this.showImage();
            }, this.options.resizeDuration);
        };

        Lightbox.prototype.showImage = function () {
            var $lightbox;
            $lightbox = $('#lightbox');
            $lightbox.find('.lb-loader').hide();
            $lightbox.find('.lb-image').fadeIn('slow');
            this.updateNav();
            this.updateDetails();
            this.preloadNeighboringImages();
            this.enableKeyboardNav();
        };

        Lightbox.prototype.updateNav = function () {
            var $lightbox;
            $lightbox = $('#lightbox');
            $lightbox.find('.lb-nav').show();
            if (this.currentImageIndex > 0) $lightbox.find('.lb-prev').show();
            if (this.currentImageIndex < this.album.length - 1) {
                $lightbox.find('.lb-next').show();
            }
        };

        Lightbox.prototype.updateDetails = function () {
            var $lightbox,
        _this = this;
            $lightbox = $('#lightbox');
            if (typeof this.album[this.currentImageIndex].title !== 'undefined' && this.album[this.currentImageIndex].title !== "") {
                $lightbox.find('.lb-caption').html(this.album[this.currentImageIndex].title).fadeIn('fast');
            }
            if (this.album.length > 1) {
                $lightbox.find('.lb-number').html(this.options.labelImage + ' ' + (this.currentImageIndex + 1) + ' ' + this.options.labelOf + '  ' + this.album.length).fadeIn('fast');
            } else {
                $lightbox.find('.lb-number').hide();
            }
            $lightbox.find('.lb-outerContainer').removeClass('animating');
            $lightbox.find('.lb-dataContainer').fadeIn(this.resizeDuration, function () {
                return _this.sizeOverlay();
            });
        };

        Lightbox.prototype.preloadNeighboringImages = function () {
            var preloadNext, preloadPrev;
            if (this.album.length > this.currentImageIndex + 1) {
                preloadNext = new Image;
                preloadNext.src = this.album[this.currentImageIndex + 1].link;
            }
            if (this.currentImageIndex > 0) {
                preloadPrev = new Image;
                preloadPrev.src = this.album[this.currentImageIndex - 1].link;
            }
        };

        Lightbox.prototype.enableKeyboardNav = function () {
            $(document).on('keyup.keyboard', $.proxy(this.keyboardAction, this));
        };

        Lightbox.prototype.disableKeyboardNav = function () {
            $(document).off('.keyboard');
        };

        Lightbox.prototype.keyboardAction = function (event) {
            var KEYCODE_ESC, KEYCODE_LEFTARROW, KEYCODE_RIGHTARROW, key, keycode;
            KEYCODE_ESC = 27;
            KEYCODE_LEFTARROW = 37;
            KEYCODE_RIGHTARROW = 39;
            keycode = event.keyCode;
            key = String.fromCharCode(keycode).toLowerCase();
            if (keycode === KEYCODE_ESC || key.match(/x|o|c/)) {
                this.end();
            } else if (key === 'p' || keycode === KEYCODE_LEFTARROW) {
                if (this.currentImageIndex !== 0) {
                    this.changeImage(this.currentImageIndex - 1);
                }
            } else if (key === 'n' || keycode === KEYCODE_RIGHTARROW) {
                if (this.currentImageIndex !== this.album.length - 1) {
                    this.changeImage(this.currentImageIndex + 1);
                }
            }
        };

        Lightbox.prototype.end = function () {
            this.disableKeyboardNav();
            $(window).off("resize", this.sizeOverlay);
            $('#lightbox').fadeOut(this.options.fadeDuration);
            $('#lightboxOverlay').fadeOut(this.options.fadeDuration);
            return $('select, object, embed').css({
                visibility: "visible"
            });
        };

        return Lightbox;

    })();

    $(function () {
        var lightbox, options;
        options = new LightboxOptions;
        return lightbox = new Lightbox(options);
    });

}).call(this);